Bill Stone is definitely a man to keep an eye on. He wowed the audience at TED 2007 with his plan for a manned exploration mission to Shackleton crater equipped with only enough fuel for the outbound trip pour encourager les explorers to well, like, explore.

I've applied the same accurate technique I did with Ultreya... And the results don't leave me very optimistic...The image obtained is quite similar to some of Ultreya, there, where I thought were in depth features, is as we know, a dune field, a beautiful one, but a dune field...Just see it for the positive side, if I was wrong once I can be wrong twice...

If you've taken the cave 'targets' from Themis toward the IR, remember that IR imaging is quite different to VIS imaging and you might see quite strange and odd results. IR imaging at night doesn't show the topography too well and is more about the thermal inertia of the target.

I can't find any MOC's to match so far - and I'm sure if there were some, they'd be in the abstract.

I'm just guessing here - on the possible structure w.r.t. the collapsed lava tubes - and this is possibly the worst 3d visualisation of all time - BUT - perhaps it's something a bit like that ( just not crap )

I'm not sure you have the names matched to the right image as the caption in the abstract says the names are listed clockwise, not according to the alphabetical label (which would've been more intuitive).

I looked for them in the HRSC archive through the map interface (I'm at work) and found four in H0979_0000_ND3.IMG, Chloe in H1904_0000_ND3.IMG and Jeanne/Annie in H0968_0000_ND3.IMG.

Unfortunately, I don't have access to Gimp here in the office so I couldn't view the images at full res and/or crop for display on the forum.

I'm just guessing here - on the possible structure w.r.t. the collapsed lava tubes - and this is possibly the worst 3d visualisation of all time - BUT - perhaps it's something a bit like that ( just not crap )

No Doug, that is not the way holes in lava tubes work. They are actual holes in the roof of the tube, and they do indeed often look rather like the ones in the pictures. Have a look at this for example:

I happen to know a bit about the subject, being interested in paleontology. Normally lava caves are rather dismal places paleontologically since the acid and often wet environment is very bad for bone preservation. However these holes in the roof are very effective pitfall traps and the talus cone that accumulates below the hole can be very good for fossils.

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